Re: [R] how to keep colnames of matrix when put it into a data frame

[Michael Dewey]

Dear Jinsong

Try cbind(x = 1:3, mat)
and see if that helps

Michael

On 09/12/2018 15:05, Jinsong Zhao wrote:

Hi there,

In the following mini-example, I hope to keep the column names of mat, but 
failed.

# mini-example

mat <- matrix(1:9, nrow = 3)
colnames(mat) <- paste("(", 1:3, ")", sep = "")
mat

      (1) (2) (3)
[1,]   1   4   7
[2,]   2   5   8
[3,]   3   6   9

data.frame(x = 1:3, mat)

   x X.1. X.2. X.3.
1 1    1    4    7
2 2    2    5    8
3 3    3    6    9

Any hints will be really appreciated.

Best,
Jinsong
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Michael
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______________________________________________
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